Troutnut ... the term "hellgramite" is reserved for the Dobsonfly (Corydalinae).
By whom? I'd like to have a talk with them about "ruling" on Blue Winged Olive's and "Flavs", among others.
So .. it is incorrect to use the term 'hellgramite' when talking about the fishfly larvae. They are simply, 'fishfly larvae'. You really should change your reference.
Really? Even Merritt (Aquatic Insects of North america) refers to all the larger Megalopteran larvae as "Hellgrammites" with no other common name mentioned. Better stop the presses. Oops! Too late...
Though the Fishfly (Chauliodinae) and the dobsonfly are from the same Megaloptera family, at first glance appear similar, and have similar stages of development, they are from different subfamily with differing subspecies...
Assuming a typo or mistaken paraphrasing and what was meant was "the same family (Corydalidae) in the order Megaloptera", the information provided in most references is now based on the different genera. The subfamily and subspecies comments refer to older taxonomic reviews I think (like the one you mentioned for reference), though I don't remember any that skipped over the genera and species in between, nor do I remember subspecies at all for that matter. As insects go this is a pretty small order with less than 300 species worldwide.
... and have very different morphology and biology.
I don't know about "very different". Yes, they're pretty easy to tell from a stonefly or a giraffe for that matter, but they still look darn close to each other, even to the more studied observer.
I sympathize with your desire to promote better and more consistant use of common names. Heck, all serious practioners of the sport do. Separating the larvae with two different common names is a good suggestion. But I must take issue with your insinuation that this website is spreading error regarding these critters, because it isn't. The truth is, there's more people out there calling them "Fish Wigglers" or "Biter Bugs" than Fishfly Larvae. In fact, the error would be to report "Fishfly larvae" as THE "common name" when unfortunately, it clearly isn't. Probably 5 or 6 out of a list of 5 or 6.
I've tried to keep the common names on this site compliant with general usage rather than technical accuracy, because the latter is a lost cause with most common names, anyway.
Exactly... The terms "technically accurate" and "common name" are two concepts seemingly incapable of reconciliation and are most often mutually exclusive, almost by definition.
On the other hand, Taxon does make a good point that attempts should be made to clarify confusion over common nomenclature whenever possible and promote better usage. Though, I must admit at times it feels like attempting to bale out the ocean with a water bucket. Not that it's worth losing sleep over because "technical accuracy" is what the Latin's for anyway.
On a different note, the connection of this thread to one in current discussion is now practical due to the new "related discussions" category in the forum. This new category should prove invaluable when pondering bug photo determinations as well as easily finding relevant contributions for other types of ongoing discussions. How many times do we have dim recollections of great comments or ideas expressed that would be great to include if we could only find them? If you ever have a deja vu, I strongly recommend taking advantage of this feature. Kudo's Jason.